EP 1595349 B1 20081029 - ALIGNMENT OF CLOCKS OVER MULTIPLE PACKET NETWORKS
Title (en)
ALIGNMENT OF CLOCKS OVER MULTIPLE PACKET NETWORKS
Title (de)
SYNCHRONISATION VON TAKTEN ÜBER MEHREREPAKETNETZWERKE HINWEG
Title (fr)
ALIGNEMENT DE SIGNAUX D'HORLOGE SUR PLUSIEURS RESEAUX A COMMUNICATION PAR PAQUETS
Publication
Application
Priority
- CA 2004000217 W 20040217
- US 44874003 P 20030220
Abstract (en)
[origin: WO2004075446A1] Disclosed is a method of aligning clocks over multiple networks having different clock domains. The method comprises transmitting timestamped packets over said networks between source and destination nodes, said timestamped packets conveying timing information based on a source clock at said source node, determining the expected delay over multiple nodes for a given traffic density, identifying at least one intermediate node between said source and destination node where said determined expected delay is such as to permit clock restoration within predefined acceptable parameters, restoring said source clock at said at least one intermediate restoration node to generate a restored intermediate clock signal, producing from said restored intermediate clock signal new timestamped packets conveying timing information based on said restored intermediate clock signal, and forwarding said new timestamped packets to said destination node.
IPC 8 full level
H04J 3/06 (2006.01)
CPC (source: EP KR US)
H04J 3/06 (2013.01 - KR); H04J 3/0673 (2013.01 - EP US); H04L 7/00 (2013.01 - KR); H04J 3/0664 (2013.01 - EP US); H04L 2012/5603 (2013.01 - KR)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004075446 A1 20040902; AT E413029 T1 20081115; DE 602004017423 D1 20081211; EP 1595349 A1 20051116; EP 1595349 B1 20081029; JP 2006523046 A 20061005; JP 4295316 B2 20090715; KR 100740731 B1 20070719; KR 20050108357 A 20051116; US 2004223518 A1 20041111; US 7376156 B2 20080520
DOCDB simple family (application)
CA 2004000217 W 20040217; AT 04711552 T 20040217; DE 602004017423 T 20040217; EP 04711552 A 20040217; JP 2006500445 A 20040217; KR 20057015036 A 20050816; US 78151004 A 20040218